It has been estimated that the earth's surface temperature has increased______ one quarter
A. by
B. at
C. to
D. with
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【C3】
A. reasons
B. examples
C. facts
D. truths
“出口日期”栏:()。
A. 2007.10.04
B. 2007.10.14
C. 2007.10.15
D. 2007.10.05
【C10】
A. Unless
B. If
C. Lest
D. Before
People went to the supermarket to______.
A. buy food
B. be lucky' customers
C. get free things
D. meet the manager